Exactly what I said, but would be followed by some restrictions and strains. The source for the deal that these birds won't be used by PAF against India or any of US's allies is from a post by fatman.
Means, the US would halt the supplies or sell at twice higher rate. You know, it's the US.
Here's where I differ with a lot of members on this forum (when it comes to the US and it's foreign policy). Why the US doesn't have any problems with Malaysia or Turkey? They are muslim countries as well. In fact, Malaysia is one of the largest semi conductor computer chips manufacturer (Intel, AMD, etc) both have R&D, Design & Manufacturing facilities in Malaysia. Turkey produces a lot of American weapons internally with American tech (F 16's are just one example).
So we need to sit down and think beyond the romance between India & the US (which in my opinion is a need based relationship to contain China and it'll last for about 20 years till the US gets a kick in the belly from India as India is JUST after US dollars...and they are NO US friends).
So, when we take a critical look at Pakistan (who's been a US ally for better or worse for over 60 years)...one has to pay attention to what are the causes? A few things are, corruption, fundamentalism, and lack of national focus towards prosperity.
It is in the US's BEST interests to have a stable, Taliban free Pakistan. The Baluchistan and other deals are also happening because of the violence and fundamentalism. Of course, the Indian influence plays a role but if Pakistan's economy was to do better, than the same country will kiss its **** for business. Right now, the Pakistan's government gets their salaries from the US and then they don't do what the masters want them to do, so naturally, you'll piss off the master. The best way to fix this is to become a self sufficient country and a bigger economy where no aid comes in and money is discussed as a business transaction, not aid from the US. Then, you'll see a sea of change.
Similarly, if these F 16's didn't have a component of American FMS, Pakistan would be able to use them in any way shape or form and without having to worry any sanctions. Remember, any country who gives money as aid, can impose sanctions. But no country would want to impose sanctions if you are helping them create jobs and enhance their economy through buying their jets. So can't blame the US for everything. Pakistani leadership has done (over decades), a lot to setup a wrong image in front of the world!